SlashScope

Even though the Cobra Night Vision Monocular is not powered by batteries (the infra-red illuminator however is) the Gen 1 device is not cheap. If you are comfortable with squeezing a lever every minute or so to view the night-time environment, the Cobra monocular may be just fit the scope for you. 'An ideal entry-level, compact Gen 1 monocular utilizing a commercial grade EP33 tube. The scope itself does not require any batteries, power being supplied by compressing two piezo crystals with the lever built in to the top of the bodyshell. One squeeze on the lever should give up to a minute of night vision; when the image starts to fade, just squeeze the lever again. A detachable short-range Infrared Illuminator is included which requires 2 x 1.5V D357/G13/SR44 button cells or 1 x 3V Lithium CR1/3N battery (not supplied).'